JPH06181956A - Bubble generating device - Google Patents

Abstract

PURPOSE:To provide a bubble generating device capable of reducing the flow rate of liquid fed under pressure from a dissolving tank without providing a reduction member or the like, and ensuring the generation of fine bubbles in a liquid reservoir. CONSTITUTION:The opening area of the outlet 3a of a nozzle 3 is formed to be larger than the opening area of the inlet 3b thereof. As a result, the flow rate of hot water W can be decreased without providing a separate reduction member or the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is used, for example, when air in the atmosphere is melted under pressure in hot water in a bathtub and then the hot water is fed again to generate fine bubbles in the bathtub. The present invention relates to a bubble generating device.

[0002]

2. Description of the Related Art Conventionally, in this type of bubble generating device, hot water is sucked from a bathtub and air is sucked from the atmosphere by a pump, and air is melted under pressure in the pump. A dissolving tank is provided between the pump and the bath in order to separate the air that has not been dissolved in the pump from the hot water. After the excess air and the hot water are separated in the dissolution tank, the hot water containing the dissolved air is discharged from the jet port provided in the bath into the bath through a net filter or the like. Therefore, fine bubbles are generated in the bath, and the hot water becomes opalescent.
On the other hand, the surplus air separated in the dissolution tank is discharged to the outside of the device.

[0003]

However, in the above-mentioned bubble generating device, as shown in FIG.
Is linear, that is, the opening area of the inlet 32 of the hot water pumped from the melting tank is the same as the opening area of the outlet 33 from which the hot water is discharged. Therefore, the flow velocity of the hot water flowing in the ejection port 31 does not change from the high flow velocity when it is pumped from the melting tank.

As a result, the hot water W passes through the net filter 35 provided at the outlet 33 at a high flow velocity. When the hot water W passes through the net filter 35 at a high flow rate, cavitation is less likely to occur in the hot water W and fine bubbles are less likely to be generated in the bath 34.

In order to solve this problem, in recent years, a deceleration member for decelerating the flow velocity of the hot water W is arranged in the ejection port 31. However, in this case, there is a problem that the number of parts increases and a process for assembling the parts is required, so that the manufacturing cost increases.

Further, since the jet port 31 is formed in a straight line, the spread of the hot water discharged into the bathtub 34 is limited to a narrow range. As a result, it takes a long time to whiten the hot water in the entire bath, so that the time for driving the pump becomes long, which is very uneconomical.

The present invention has been made in order to solve the above problems, and its purpose is to make it possible to reduce the flow rate of the liquid pressure-fed from the dissolution tank without providing a speed reducing member or the like. Another object of the present invention is to provide a bubble generator capable of generating fine bubbles in a liquid storage tank.

[0008]

In order to achieve the above object, in the present invention, a liquid storage tank for storing a liquid, having a suction port and an ejection port provided with a cavitation generating means, and the liquid storage tank are provided. A pump for sucking the liquid in the liquid storage tank from the suction port, a gas suction port connected to the suction port of the pump for sucking gas from the outside by the suction force of the pump, and a gas pressurized and dissolved in the pump, A liquid is introduced, and after separating the undissolved surplus gas in the liquid, the liquid from which the surplus gas has been removed is discharged from the jet outlet into the liquid storage tank through a cavitation generating means. The gist of the bubble generator provided is that the opening area on the outlet side of the ejection port is formed larger than the opening area on the inlet side.

[0009]

According to the above construction, when the pump is driven, the liquid is sucked into the pump from the suction port of the liquid storage tank,
The gas is sucked from the gas suction port. And
These are pressurized in the pump and the gas is dissolved in the liquid. Then, the gas and the liquid that have been pressure-melted in the pump are pumped into the dissolution tank by the pump.

In the dissolution tank, the surplus gas and the liquid containing the dissolved gas are separated. The surplus gas separated from the liquid is sucked into the pump again together with the liquid in the liquid storage tank and melted under pressure. Further, the liquid containing the dissolved gas is introduced from the inlet of the jet outlet and discharged from the outlet to the liquid storage tank.

Since the opening area of the outlet of the jet outlet is formed larger than the opening area of the inlet, the flow velocity of the liquid flowing from the inlet is reduced when it reaches the outlet side. Then, the decelerated liquid passes through the cavitation generating means at a low speed from the outlet and is discharged into the liquid storage tank.

At this time, since the liquid passes through the cavitation generating means at a low speed, the cavitation generating means surely causes cavitation in the liquid, and fine bubbles are surely generated in the liquid storage tank.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is embodied in a bubble generating device for a bathtub will be described below with reference to FIGS. 1 and 2.

FIG. 1 is a schematic circuit diagram of the bubble generating apparatus in this embodiment. As shown in the figure, hot water W as a liquid is stored in the bathtub 1. A suction port 2 and a jet port 3 are vertically formed on the side wall of the bathtub 1.
A pump 5 is connected to the suction port 2 via a suction pipe line 4. An air suction port 6 for sucking air as gas is connected to the suction port of the pump 5.

A melting tank 7 is arranged on the downstream side of the pump 5, and the pump 5 and the melting tank 7 are connected by an inflow pipe line 8. Further, the dissolution tank 7 and the jet port 3 of the bath 1 are connected by a discharge pipe line 9. Further, the dissolution tank 7 and the suction conduit 4 are connected by a reduction conduit 10.

As shown in FIG. 2, the outlet 3 of the jet outlet 3
A net filter 11 as a cavitation generating means is provided in a. Although not shown, the suction port 2 also covers the net filter 11 covered with the jet port 3.
A coarser net filter is provided. Also,
The opening area of the outlet 3a of the jet port 3 is formed to be larger than the opening area of the inlet 3b communicating with the discharge conduit 9. The outlet 3a and the inlet 3b are connected by a tapered portion 3c. That is, in this embodiment, the tapered portion 3c also constitutes the outlet of the ejection port 3.

Next, the operation of the bubble generator having the above structure will be described. First, when the pump 5 is driven, hot water W in the bathtub 1 is sucked into the pump 5 from the suction port 2 and air is sucked into the pump 5 from the air suction port 6 through the suction pipe line 4 by the suction force of the pump 5. The air is melted under pressure in the hot water W in the pump 5. Then, the hot water W containing the melted air is pressure-fed into the melting tank 7 through the inflow conduit 8.

In the dissolution tank 7, the air that has not been pressure-dissolved by the pump 5 is used as excess air, and is used as the reducing pipe 1
It is reduced from 0 to the suction pipe line 4. Further, the hot water W from which the surplus air is separated passes through the discharge pipe line 9 and the inlet 3 of the jet port 3.
It flows into the jet outlet 3 from b. After that, when the hot water W reaches the taper portion 3c, the flow velocity of the hot water W is reduced.
This is because when the hot water W reaches the taper portion 3c, the opening area of the taper portion 3c becomes larger than the opening area of the inlet 3b, so that the flow velocity of the hot water W also depends on the size of the opening area of the ejection port 3. It will be slowed down.

Then, in a state where the flow speed is reduced, the hot water W is jetted into the bathtub 1 from the outlet 3a of the jet outlet 3 through the net filter 11 at a low speed. Therefore, in this case, cavitation is surely generated, and fine bubbles are surely generated in the bathtub 1.

As described above, in this embodiment, the opening area of the outlet 3a of the jet outlet 3 is made larger than the opening area of the inlet 3b, so that the hot water W can be provided without providing a separate speed reducing member or the like. It is possible to slow down the flow rate of. As a result, the number of parts and assembly work are reduced compared to the past.
The manufacturing cost can be reduced.

Further, according to this embodiment, since the opening area of the outlet 3a of the jet outlet 3 is formed large, the range of spread of the fine bubbles generated in the bath 1 is also widened accordingly. As a result, since the hot water W in the bathtub 1 can be opalified in a short time, the driving time of the pump 5 is shortened,
Very economical.

Further, according to this embodiment, since the opening area of the outlet 3a of the jet outlet 3 is made large, the outlet 3a
It is hygienic because it is difficult for the scale to adhere to the inside.
It is also difficult for the net filter 11 to be clogged with scale.

The present invention is not limited to the above embodiments, but may be configured as follows, for example, within the scope of the invention. (1) In the above embodiment, the bath 1 is embodied as the liquid storage tank, but it is embodied as a water tank or the like, or water or a liquid containing various components is used instead of the hot water W as the liquid. It may be embodied as a bubble device. Further, air may be embodied as a gas in a bubble device using oxygen, carbon dioxide, or the like.

(2) In the above embodiment, the suction port 2 and the jet port 3 are provided on the side wall of the bathtub 1. However, the suction port 2 is provided on the bottom surface of the bathtub 1 or on the wall surface facing the jet port 3. You may.

(3) In the above embodiment, the outlet 3 of the jet outlet 3
Although the tapered portion 3c is provided between the a and the inlet 3b, this may be embodied as a right-angled step shape. (4) In the above embodiment, the net filter 11 is embodied as the cavitation generating member.
It may be embodied in place of a sponge-like porous member or a honeycomb filter.

[0026]

As described in detail above, according to the present invention,
It is possible to reduce the flow speed of the liquid that is pressure-fed from the dissolution tank without providing a deceleration member or the like, and it is possible to reliably generate fine bubbles in the liquid storage tank. As a result, the number of parts and the number of assembling operations can be reduced, which has an excellent effect that the manufacturing cost can be reduced. further,
According to the present invention, since it is possible to generate fine bubbles in the liquid storage tank over a wide range, it is possible to shorten the driving time of the pump, which is very economical.

[Brief description of drawings]

FIG. 1 is a schematic circuit diagram of a bubble generating device embodying the present invention.

FIG. 2 is a side sectional view of an ejection port and a bath.

FIG. 3 is a side sectional view of a conventional jet port and bath.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Bathtub as a liquid storage tank, 2 ... Suction port, 3 ... Jet port, 3a ... Exit, 3b ... Inlet, 5 ... Pump, 6 ... Air suction port as a gas suction port, 7 ... Melting tank, 11 ... Cavitation Net filter as generator, W ... Hot water as liquid

Claims (1)

[Claims] 1. A liquid storage tank for storing a liquid, the liquid storage tank having a suction port and a jet port provided with a cavitation generating means; a pump for sucking the liquid in the liquid storage tank from the suction port of the liquid storage tank; A gas suction port which is connected to a suction port of the pump and sucks gas from the outside by a suction force of the pump; and a gas and a liquid pressurized and dissolved in the pump flow into the suction port.
A bubble generation device including a dissolution tank that separates undissolved excess gas in the liquid and then discharges the liquid from which the excess gas has been removed into the liquid storage tank through the cavitation generation means from the ejection port. 3. The bubble generating device according to claim 1, wherein the opening area of the jet outlet on the outlet side is formed to be larger than the opening area of the inlet side.